The letters E and Z are used to distinguish how atoms are located relative to one of these structures. Because of resonance, each of the nitrogen-oxygen bonds in nitrate partially has this structure. Possessing this structure distinguishes an alkene from an alkane as well as an unsaturated fat from a saturated fat. In ethylene, they are formed from both the overlap of sp2 orbitals and the overlap of p orbitals and thus consist of a sigma and pi bond. For 10 points, name 
The letters E and Z are used to distinguish how atoms are located relative to one of these structures. Because of resonance, each of the nitrogen-oxygen bonds in nitrate partially has this structure. Possessing this structure distinguishes an alkene from an alkane as well as an unsaturated fat from a saturated fat. In ethylene, they are formed from both the overlap of sp2 orbitals and the overlap of p orbitals and thus consist of a sigma and pi bond. For 10 points, name this type of chemical bond that has bond order of two.
The letters E and Z are used to distinguish how atoms are located relative to one of these structures.
double bond